초록 ▼

A mobile station is disclosed that functions within a 3G DS-CDMA communication system, in which a separate active set is defined for each of the different channel types. With the use of a separate Fundamental Channel Active Set, Forward Link-Supplemental Channel Active Set, Reverse Link-Supplemental

A mobile station is disclosed that functions within a 3G DS-CDMA communication system, in which a separate active set is defined for each of the different channel types. With the use of a separate Fundamental Channel Active Set, Forward Link-Supplemental Channel Active Set, Reverse Link-Supplemental Channel Active Set, and Dedicated Control Channel Active Set a flexible handoff of a multi-service active session is possible. Each type of channel is capable of handing off separately, thereby allowing channels with different requirements, such as resource requirements or signal strength requirements, to be handed off at different times, to different basestations, and/or in different methods (ie. soft or hard handoff). The handoffs are initiated by a basestation controller by updating, within the mobile station and the applicable basestations, the particular active set corresponding to the physical channel requiring a handoff.

대표청구항 ▼

A mobile station is disclosed that functions within a 3G DS-CDMA communication system, in which a separate active set is defined for each of the different channel types. With the use of a separate Fundamental Channel Active Set, Forward Link-Supplemental Channel Active Set, Reverse Link-Supplemental

A mobile station is disclosed that functions within a 3G DS-CDMA communication system, in which a separate active set is defined for each of the different channel types. With the use of a separate Fundamental Channel Active Set, Forward Link-Supplemental Channel Active Set, Reverse Link-Supplemental Channel Active Set, and Dedicated Control Channel Active Set a flexible handoff of a multi-service active session is possible. Each type of channel is capable of handing off separately, thereby allowing channels with different requirements, such as resource requirements or signal strength requirements, to be handed off at different times, to different basestations, and/or in different methods (ie. soft or hard handoff). The handoffs are initiated by a basestation controller by updating, within the mobile station and the applicable basestations, the particular active set corresponding to the physical channel requiring a handoff. nd the reference cell and compare them to determine the state of the memory cell. This increased sensitivity enables the amplifier to have a substantially increased dynamic range without introducing components that might adversely affect the memory circuitry parameters. t combiner connected to the output of the synchronous rectifier to supply dc power to a load. 5. A DC-DC switch mode power converter as recited in claim 4 wherein the variable phase shifter is a time delay circuit. 6. A DC-DC switch mode power converter as recited in claim 5 wherein the load is a computer component. 7. A DC-DC switch mode power converter as recited in claim 6 wherein the transformer isolates the AC generator from the synchronous rectifier. 8. A DC-DC switch mode power converter as recited in claim 7 wherein the transformer matches the input and output voltages. 9. A DC-DC switch mode power converter as recited in claim 8 wherein the leakage inductance of the transformer can be part of the energy storage inductance. 10. A DC-DC switch mode power converter as recited in claim 9 wherein the leakage inductance of the transformer is the only storage inductance. 11. A DC-DC switch mode power converter, comprising: a) an input rectifier for converting ac input power into dc input power; b) an ac generator connected to the output of the input rectifier for converting the dc input power into an ac power output at a predetermined frequency; c) a transformer having a primary connected to the output of the ac generator and a secondary connected to a synchronous rectifier; d) the synchronous rectifier is coupled by the transformer to the ac generator for converting the ac power into a dc power output; e) a gate driving ac generator connected to the switches of the synchronous rectifier wherein the switch input capacitance acts as the circuit capacitance of the ac generator; f) a variable phase shifter connected to the output of the ac generator and a switch of the synchronous rectifier to change the phase of the synchronous rectifier in reference to the ac generator wherein the output power of the synchronous rectifier is controlled; and g) filtering elements connected to the output of the synchronous rectifier to supply dc power to a load. 12. A DC-DC switch mode power converter as recited in claim 11 wherein the variable phase shifter is a time delay circuit. 13. A DC-DC switch mode power converter as recited in claim 12 wherein the load is a computer component. 14. A DC-DC switch mode power converter as recited in claim 13 wherein the transformer isolates the AC generator from the synchronous rectifier. 15. A DC-DC switch mode power converter as recited in claim 14 wherein the transformer matches the input and output voltages. 16. A DC-DC switch mode power converter as recited in claim 15 wherein the leakage inductance of the transformer can be part of the energy storage inductance. 17. A DC-DC switch mode power converter as recited in claim 16 wherein the leakage inductance of the transformer is the only storage inductance. 18. A DC-DC switch mode power converter, comprising: a) an input rectifier for converting ac input power into dc input power; b) an ac generator connected to the output of the input rectifier for converting the dc input power into an ac power output at a predetermined frequency; c) a transformer having a primary connected to the output of the ac generator and a secondary connected to a synchronous rectifier; d) the synchronous rectifier is coupled by the transformer to the ac generator for converting the ac power into a dc power output; d) a variable phase shifter connected to the output of the ac generator and a switch of the synchronous rectifier to change the phase of the synchronous rectifier in reference to the ac generator wherein the output power of the synchronous rectifier is controlled; e) a rectifier circuit connected to a switch of the synchronous rectifier wherein the rectifier circuit acts as a peak detector that utilizes the gate drive voltage as the bias voltage for the synchronous switch; and f) filtering elements connected to the output of the synchronous rectifier to supply dc power to a load. 19. A DC-DC switch mode power converter as recited in claim 18 w